\begin{table}%t3
\caption{The uncertainties of the Be abundance introduced by the
  uncertainties of the atmospheric parameters and by uncertainty of the fitting 
itself related to the level of the continuum and the $S/N$.}
%\centering
\par
\label{tab:sigma}
\begin{tabular}{ccccccc}
\noalign{\smallskip}
\hline\hline
\noalign{\smallskip}
Star & $\sigma_{{T}_{\rm eff}}$ & $\sigma_{\rm log {\it g}}$ & $\sigma_{\rm \xi}$ &
 $\sigma_{\rm [Fe/H]}$ & $\sigma_{\rm fitt.}$  & $\sigma_{\rm total}$ \\
\hline\noalign{\smallskip}
E 7 & $\pm$0.03 & $\pm$0.10 & $\pm$0.00 & $\pm$0.00 & $\pm$0.05 &  $\pm$0.12 \\
E 86 & $\pm$0.05 & $\pm$0.10 & $\pm$0.05 & $\pm$0.05 & $\pm$ 0.10 & $\pm$0.17 \\
E 60 & $\pm$0.15 & $\pm$0.05 & $\pm$0.03 & $\pm$0.05 & $\pm$ 0.20 & $\pm$0.26 \\
\noalign{\smallskip}
\hline
\end{tabular}
\end{table}